rec.lock()
                            .unwrap()
                            .record_existing_file(
                                txn.clone(),
                                diff_algorithm,
                                channel.clone(),
                                working_copy.clone(),
                                &changes,
                                &item,
                                new_papa,
                                vertex,
                            )?;

                        rec.lock().unwrap().record_existing_file(
                            txn.clone(),
                            diff_algorithm,
                            channel.clone(),
                            working_copy.clone(),
                            &changes,
                            &item,
                            new_papa,
                            vertex,
                        )?;

                rec.lock()
                    .unwrap()
                    .record_existing_file(
                        txn.clone(),
                        diff_algorithm,
                        channel.clone(),
                        working_copy.clone(),
                        changes,
                        &item,
                        new_papa,
                        vertex,
                    )?;

                rec.lock().unwrap().record_existing_file(
                    txn.clone(),
                    diff_algorithm,
                    channel.clone(),
                    working_copy.clone(),
                    changes,
                    &item,
                    new_papa,
                    vertex,
                )?;